Filtering device



June 28,1927. 1,633,604

w. B. PUMPH-REY FILTERING DEVICE Filed Jan. 11. 1926 7 mmvroa WILLIAM B. PUHPHRE Y.

A TTORNEYS.

Patented June 28, 1927.

UNITED srariaisv WILLIAM B. PUMrHREY, or snQUoIA, CALIFORNIA.

FILTERING DEVICE.

Application filed January 11, 1926. Serial No. 80,452.

i The present invention relates to improvements in filtering devices, and its particular object is to provide a filter for home use that may be secured in the water system and allows a small stream of water to continuously seep through a filtering material. One particularadvantage ofrmy device is that it is self-cleaning so far as a fan is disposed in close relation to the inner faces of the filtering walls and is actuated every time water is withdrawn from the system so as to clean the walls. The device is fur thermore self-cleaning in so far as normally the pressure of the water causes a small amount to be forced through the filtering material which would tend to leave small deposits of material on the inner faces of the filtering material; but when the water is turned on for the purpose of withdrawing water from the system the pressure upon the walls of the filtering material ceases and is then changed to suction so that a cleaning action takes place every time the water is turned on, not only due to the scraping ac tion of the fan, but also due to the suction caused thereby.

' It is further proposed to provide means for heating the water about the filtering Walls so that the water becomes sterilized. Further objects and advantages of my device will appear as the specification pr0- ceeds.

The preferred form of my invention is illustrated in the accompanying drawing in which:

Figure 1 shows a vertical axial section through my device, and

Figure 2 a central transverse section on a reduced scale.

While I have shown only the preferred form of the invention, it should be understood that various changes or modifications may be made within the scopeof the claims hereto attached without departing from the spirit of the invention.

A ring l supported on a base 2 forms an annular chamber 3 and has two sections 4: and 6 of a casing engaging opposite ends of the ring with a central shaft 7 extending through both ring and casing sections, and allowing the latter to be tightened upon the ring by means of nutsS. The casing sections at and 6 are filled with the walls of filtering material 9, and are recessed in their outer ends, as shown at 11, to allow water to filter from the central space within'the ring through the-filtering walls into the recesses11, which communicate through radial passages 12 with annular recesses 13, sur rounding the shaft 7and-communicating through radial ports 14 with'a central bore 16 in the shaft, which leads to" the spout I 17 froin-whi'ch filtered Water is discharged.

The base 2 of the ring is provided with threaded ports 18 and 19 adapted for con nection to a water pipe, the water entering from the port 18 and a passage 21 into the chamber 3 and leaving through a passage 22 and the port 19. A fan 23 is supported on the shaft 7 between the two walls of filtering material and is imparted revolving motion by' the running water whenever a faucet is opened for the purpose of withdrawing water from the system.

WVashers 24: are preferably used on opposite sides of the fan where the same joins the central shaft so as to prevent the water from leaking around the outside of the shaft.

' Suitable electric heating elements 26 may be accommodated .in a groove 27 in the ring and allow the water to be heated for the purpose of sterilizing the same and the walls of filtering material, 7

The mannerin which my device Works should be readily understood from the foregoing description; the ports 18 and 19 are connected into the water pipe at any suitable place. Water is thereby allowed to enter the chamber Eand will slowly seep through the filtering material on opposite sides of the chamber into recesses 11 and from there through the ports 12 into the annular recesses 13 and further through the ports 14 into the bore 16 in the shaft 7 so as to be discharged through'the spout 17. hen any faucet is opened in thewater system to withdraw water for other purposes the water runs through the chamber 3 and imparts rotary motion to the fan 23, the blades of which being in close proximity to the walls 9 of filtering material clean the same of any scum or the like that may have collected on the faces thereof. It should also be notedthat, while ordinarily the water is forced through the filtering material, the pressure ceases when a faucet is opened and changes to suction so that, if any scum is collected on the inner faces'of the filtering material, or has slightly penetrated the same, it will be drawn out and carried with the Water,

which, of course, is used for otherthan drinking purposes.

The heating elements may he used to steri material by passing the heated Water therethrough.

I claim: g

1. A filtering device comprising a ring, a centrally disposed shaft, two casing sections adapted for engagementwith opposite sides of the ring, means fortightening the sections'u pon the ring, filtering Walls with-in thetwo sections leaving the spacewithin thering clear, and means for connecting the said spacewith a Water pipe, the; sections being formed with recesses mopposite Walls 0' lize the Water, and to "clean the filtering thereof adapted to receive water seeping through the filtering material, and therecesses communicating with a bore inJt-he shaft for. guiding the Water outwardly.

2. A iiltering device-of the character described, comprising an enclosure adapted to 1 he'fitted'into a Water distrlbutlng system so as to alloiy Water to run therethrough, the enclosure haying Walls of filtering material allowing asmall amount of the Water to continucn slyl seep through the same electric heating elements heating theyvater and rapi g. een iopem by water n n through the enclosure for cleaning the inner faces oi the Walls c v In testimony wherleioflaffix myfsignature.

WILLIAM BJrUMPHREY, 

